<template>
  <div>
    <el-card class="box-card">
      <div slot="header" class="clearfix header-box">
        <span>文章分类</span>
        <el-button type="primary" size="mini" @click="addVisible = true">添加分类</el-button>
      </div>
      <!-- 表格区域 -->
      <el-table stype="width: 100%;" :data="cateList" border stripe>
        <el-table-column label="序号" prop="id" width="100"></el-table-column>
        <el-table-column label="分类名称" prop="cate_name"></el-table-column>
        <el-table-column label="分类别名" prop="cate_alias"></el-table-column>

        <!-- <el-table-column label='分类别名'>
        <template v-slot="scope">
        <span :style="{color:'red'}"> {{scope.row.cate_alias}} </span>
        </template>
        </el-table-column> -->

        <el-table-column label="操作">
          <template v-slot="scope">
            <el-button type="primary" size="mini" @click="showEditDialog(scope.row.id)">修改</el-button>
            <el-button type="danger" size="mini" @click="remove(scope.row.id)">删除</el-button>
          </template>
        </el-table-column>
      </el-table>

    </el-card>

    <!-- 修改文章分类的对话框 -->
    <el-dialog title="修改文章分类" :visible.sync="editVisible" width="35%">
      <!-- 修改的表单 -->
      <el-form @close="onEditClosed" :model="editForm" :rules="addRules" ref="editFormRef" label-width="100px">
        <el-form-item label="分类名称" prop="cate_name">
          <el-input v-model="editForm.cate_name"></el-input>
        </el-form-item>
        <el-form-item label="分类别名" prop="cate_alias">
          <el-input v-model="editForm.cate_alias"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button size="mini" @click="editVisible = false">取 消</el-button>
        <el-button size="mini" @click="editCate" type="primary" >确 定</el-button>
      </span>
    </el-dialog>

    <!-- 添加文章分类的对话框 -->
    <el-dialog
      @close="onAddClosed"
      title="添加文章分类"
      :visible.sync="addVisible"
      width="30%">
      <!-- 添加时候用的表单 -->
      <el-form :model="addForm" :rules="addRules" ref="addRef" label-width="70px">
        <el-form-item label="分类名称" prop="cate_name">
          <el-input v-model="addForm.cate_name" minlength="1" maxlength="10"></el-input>
        </el-form-item>
        <el-form-item label="分类别名" prop="cate_alias">
          <el-input v-model="addForm.cate_alias" minlength="1" maxlength="15"></el-input>
        </el-form-item>
      </el-form>

      <span slot="footer" class="dialog-footer">
        <el-button @click="addVisible = false">取 消</el-button>
        <el-button type="primary" @click="addCate">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'ArtCate',
  data() {
    return {
      cateList: [],
      addVisible: false,  // 控制添加文章分类的对话框
      editVisible: false,  // 控制修改文章分类的对话框
      // 添加表单的是数据对像
      addForm: {  
        cate_name: '',
        cate_alias: ''
      },
      // 修改表单的数据对象
      editForm: {},
      // 添加表单的验证规则
      addRules: {
        cate_name: [
          { required: true, message: '请输入分类名称', trigger: 'blur' },
          { pattern: /^\S{1,10}$/, message: '分类名必须是1-10位的非空字符', trigger: 'blur' }
        ],
        cate_alias: [
          { required: true, message: '请输入分类别名', trigger: 'blur' },
          { pattern: /^[a-zA-Z0-9]{1,15}$/, message: '分类别名必须是1-15位的字母数字', trigger: 'blur' }
        ]
      }

    }
  },
  methods: {
    // 获取文章分类数据
    async initCateList() {
      const res = await this.$http.get('/my/cate/list')
      if(res.data.code === 0) {
      this.cateList = res.data.data
      }

    },
    onAddClosed() {
      // 关闭弹窗时自动触发
      this.$refs.addRef.resetFields()
    },
    addCate() {
    // 表单校验
      this.$refs.addRef.validate(async valid => {
        if(!valid) return
        // 使用接口
        const { data: res } = await this.$http.post('/my/cate/add', this.addForm)
        if(res.code === 1) return this.$message.error('添加文章分类失败!')
        this.$message.success('添加文章分类成功!')
        // 关闭对话框
        this.addVisible = false
        // 重新请求数据
        this.initCateList()
      })
    },
    // 展示编辑的对话框
    async showEditDialog(id) {
      const res = await this.$http.get('/my/cate/info', {
        params: { id }
      })
      if(res.data.code === 0) {
        // 为data中的editForm赋值
        this.editForm = res.data.data
        // 展示对话框
        this.editVisible = true
      }
    },
    onEditClosed() {
      this.$refs.editFormRef.resetFields()
    },
    editCate() {
      this.$refs.editFormRef.validate(async valid => {
        if(!valid) return
        // 2.使用接口
        const { data: res } = await this.$http.put('/my/cate/info', this.editForm)
        // 3.判断
        if(res.code !==0 ) return this.$message.error('修改文章失败!')
        this.$message.success('修改文章成功!')
        // 4.关闭对话框
        this.editVisible = false
        // 5.重新请求数据 
        this.initCateList()
      })
    },
    async remove(id) {
      // 不允许删除前两个分类
      if (id === 1 || id === 2) return this.$message.error('管理员不允许删除这个分类！')

      // 询问用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该分类, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      if (confirmResult === 'cancel') return

      // 发起请求删除对应的分类
      const { data: res } = await this.$http.delete('/my/cate/del', {
        params: { id }
      })

      // 判断是否删除成功
      if (res.code !== 0) return this.$message.error('删除分类失败！')
      this.$message.success('删除分类成功！')
      this.initCateList()
    }
  },
  created(){
    this.initCateList()
  },
  
  

}
</script>

<style lang="less" scoped>
.header-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

</style>
